The pair used to visit a nursing home in Wagga Wagga each week as part of a pet therapy program.

Ruby, who is part kelpie part German Shepherd would make the rounds with Robert visiting residents of the nursing home and the dementia unit for a few hours at a time.

While Ruby's working days are now over, Robert remembers her as the star of the pet therapy program who was always excited to go to work.

Robert recorded Ruby's story as part of ABC Open's Working Dogs project. You're invited to share your working dog story, we want to know what the very best and very worst thing your dog has done in its career.